All categories

3 years ago

the volume of a pyramid is 84 cubic feet. the area of the base is 21 square feet. find the height of the pyramid

1 answer:

vladimir2022 [97]3 years ago

6 0

Area of the base is 21 square feet
<span>Pyramid Volume = (Area of the Base * Height) ÷ 3
</span>
84 = (21 * Height) / 3Height = 84 * 3 / 21
Height = 12 feet
Source:http://www.1728.org/volpyrmd.htm

You might be interested in

Sydney’s teacher says she may have her report card percentage based on either the mean or the median and she can drop one test s

Yuri [45]

Answer:

I'm jus gonna guess 94 if right brainliest plzzz

4 0

3 years ago

Read 2 more answers

Y varies directly with x. If y=25 when x=5, find y when x =-4<br><br>y =

alina1380 [7]

Answer:

y = -20

Step-by-step explanation:

Given that y varies directly with x it means changing x will also cause change in y

Mathematically it can be written as:

y∝x

Removing the proportionality symbol

y = kx

Given y=25 when x=5 Putting the values

$25 = k(5)\\k = \frac{25}{5}\\k = 5$

Now

$y = 5x$

We have to find the value of y when x = -4

Putting x=-4

$y = 5(-4)\\y = -20$

Hence,,

y = -20

7 0

3 years ago

Solve for x. Round your answer to the nearest tenth.

kipiarov [429]

25 because you do 19 squared plus 16 squared equals 617, you do 617 rooted. It’s called pythagorus.

8 0

2 years ago

An anchor is released from a boat and begins sinking. Its

Andrew [12]

you multiply -10 and nine and you get -90 hope this helps.

Step-by-step explanation:

6 0

3 years ago

Find the center and radius for the circle by the equations: x2 + y2 + 5x - y + 2 = 0.

lord [1]

X2+5x+y2-y=-2
X2+2*5x2+(5/2)^2-(5/2)^2+y2-2*y/2+(1/2)^2-(1/2)^2=-2
(x+5/2)^2+(y-1/2)^2-13/2=-2
(x+5/2)^2+(y-1/2)^2=9/2
So centre =(-5/2,1/2)
Radius=(9/2)^(1/2)

7 0

3 years ago